<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="resources/compositor-touch-hit-rects.css">
<style>
.scroll {
  overflow-y: scroll;
  overflow-x: hidden;
  border: 1px solid lightgrey;
  height: 50px;
}
#overflowwithborder {
  border: 6px solid lightblue;
  padding: 4px;
}
#transformed {
  transform: translate3d(10px, 10px, 0);
  will-change: transform;
}
.relative {
  position: relative;
  /* ensure it doesn't interfere with subsequent layer promotions */
  z-index: -1;
}
</style>
</head>
<body>
<p id="description">
This test verifies the hit test regions given to the compositor specifically around composited
overflow scroll elements.
</p>

<div id="tests">
  <div id="scroll1" class="scroll">
    <div style='height: 13px;'></div>
    <div class="testcase" id="scrollContent">Scroll content</div>
    <div style='height: 50px;'></div>
  </div>
  <div id="scroll5" class="scroll">
    <div>
      <div style='height: 13px;'></div>
      <div class="testcase" id="scrollContent5">Scroll content 5</div>
      <div id="scroll5spacer" style='height: 50px;'></div>
    </div>
  </div>
  <div id="scroll6" class="scroll">
    <div>
      <div style='height: 13px;'></div>
      <div class="testcase relative" id="scrollContent6">Scroll content 6</div>
      <div id="scroll6spacer" style='height: 50px;'></div>
    </div>
  </div>
  <div id="scroll2" class="scroll">
    <div style='height: 10px;'></div>
    <div id="scroll2b" class="scroll">
      <div style='height: 30px;'></div>
      <div class="testcase" id="nestedContent">Nested content</div>
      <div style='height: 30px;'></div>
    </div>
    <div style='height: 50px;'></div>
  </div>
  <div id="scroll4" class="scroll">
    <div style='height: 10px;'></div>
    <div id="overflowwithhandler" class="scroll testcase">
      <div style='height: 30px;'></div>
      <div>overflow div with a touch handler</div>
      <div style='height: 60px;'></div>
    </div>
    <div style='height: 50px;'></div>
  </div>
  <div id="overflowwithborder" class="scroll testcase">
    <div style='height: 30px;'></div>
    <div>overflow div with a touch handler and large border</div>
    <div style='height: 60px;'></div>
  </div>
  <!-- Note this case needs to be last because the transform can disable
       accelerated overflow scrolling of any following elements -->
  <div id="scroll3" class="scroll">
    <div style='height: 13px;'></div>
    <div class="testcase" id="withTransform">
      <div id="transformed">Transformed</div>
    </div>
    <div style='height: 50px;'></div>
  </div>

</div>

<div id="console"></div>
<script src="resources/compositor-touch-hit-rects.js"></script>
<script>

// Scroll after layout has finished.
preRunHandlerForTest['scrollContent'] = function(e) {
    // Scroll so the rect is visible but slightly clipped.
    document.getElementById('scroll1').scrollTop = 15;
};

preRunHandlerForTest['scrollContent5'] = function(e) {
    document.getElementById('scroll5').scrollTop = 5;
    // force layout after scroll position changed
    document.getElementById('scroll5spacer').style.height="60px";
};

preRunHandlerForTest['scrollContent6'] = function(e) {
    document.getElementById('scroll6').scrollTop = 5;
    // force layout after scroll position changed
    document.getElementById('scroll6spacer').style.height="60px";
};

preRunHandlerForTest['nestedContent'] = function(e) {
    document.getElementById('scroll2').scrollTop = 20;
    document.getElementById('scroll2b').scrollTop = 18;
};

preRunHandlerForTest['withTransform'] = function(e) {
    document.getElementById('scroll3').scrollTop = 20;
};

preRunHandlerForTest['overflowWithHandler'] = function(e) {
    document.getElementById('scroll4').scrollTop = 20;
    document.getElementById('overflowWithHandler').scrollTop = 18;
};

preRunHandlerForTest['overflowwithborder'] = function(e) {
    document.getElementById('overflowwithborder').scrollTop = 18;
};

if (window.internals) {
    internals.settings.setPreferCompositingToLCDTextEnabled(true);
}
</script>
</body>
